/**
 * @file elements.css
 * @description Base styles for HTML tags.
 * @context
 *   body (Global text defaults)
 *   h1-h6 (Typography)
 *   p, blockquote, pre, code (Content blocks)
 *   strong, em, mark, del, ins, sub, sup, small (Inline formatting)
 *   a (Links. vars: --link-color, --link-hover-color)
 *   ul, ol, dl (Lists)
 *   table, th, td (Data tables)
 *   form, label, input, textarea, select (Form controls)
 *   details, summary (Disclosure widget)
 */

/* Base styles */
html {
  background-color: var(--background-color);
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  font-size: 1rem;
  padding: 0;
  background-color: var(--background-color);
  color: var(--text-color);
  min-width: 20rem;
}

/* There is no styling applied to div elements */
/* div {} */

h1 {
  margin: 1.5rem 0 1rem;
  font-weight: bold;
  font-size: 2rem;
}

h2 {
  margin: 1.25rem 0 0.75rem;
  font-weight: bold;
  font-size: 1.75rem;
}

h3 {
  margin: 1rem 0 0.5rem;
  font-weight: bold;
  font-size: 1.5rem;
}

h4 {
  margin: 0.75rem 0 0.25rem;
  font-weight: bold;
  font-size: 1.25rem;
}

h5 {
  margin: 0.5rem 0 0;
  font-weight: bold;
  font-size: 1.1rem;
}

h6 {
  margin: 0.25rem 0 0;
  font-weight: bold;
  font-size: 1rem;
}

p {
  font-size: 1rem;
  margin: 1rem 0;
  min-width: 10rem;
}

blockquote {
  margin: 1rem 0;
  padding: 1rem 2rem;
  background-color: var(--secondary-color);
  border-left: 5px solid var(--primary-color);
}

pre {
  font-family: "Courier New", Courier, monospace;
  background-color: var(--secondary-color);
  padding: 5px;
  border-radius: 3px;
  overflow-x: auto;
}

pre.wrap {
  white-space: pre-wrap;
}

code {
  font-family: "Courier New", Courier, monospace;
  background-color: var(--inline-code-background-color);
  color: var(--inline-code-text-color);
  padding: 2px 6px;
  border-radius: 0.25rem;
  font-size: 0.95em;
  white-space: nowrap;
  border: 1px solid var(--inline-code-border-color);
}

code.multiline {
  display: block;
  white-space: pre-wrap;
}

strong {
  font-weight: bold;
}

em {
  font-style: italic;
}

mark {
  background-color: var(--highlight-color);
  color: var(--highlighted-text-color);
}

del {
  text-decoration: line-through;
}

ins {
  text-decoration: underline;
}

sub {
  vertical-align: sub;
  font-size: smaller;
}

sup {
  vertical-align: super;
  font-size: smaller;
}

small {
  font-size: smaller;
}

/* Horizontal Rule */
hr {
  border: none;
  border-top: 1px solid var(--secondary-color);
  margin: 1rem 0;
}

/* Links */
a {
  color: var(--link-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: var(--link-hover-color);
}

a:visited,
a.visited {
  color: var(--link-visited-color);
}

h1 a,
h2 a,
h3 a,
h4 a,
h5 a,
h6 a {
  text-decoration: none;
  color: var(--text-color);
}

h1 a:hover,
h2 a:hover,
h3 a:hover,
h4 a:hover,
h5 a:hover,
h6 a:hover,
nav a:hover {
  color: var(--primary-color);
}

/* Lists */
ul,
ol {
  padding-left: 1rem;
}

ul {
  list-style: disc;
}

ol {
  list-style: decimal;
}

/* There is no styling applied to li elements */
/* li {} */

dl {
  padding-left: 1rem;
}

dt {
  font-weight: bold;
}

dd {
  padding-left: 1rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

thead {
  background-color: var(--secondary-color);
}

th {
  padding: 0.5rem;
  border-bottom: 1px solid var(--primary-color);
  border-right: 1px solid var(--secondary-color);
  border-left: 1px solid var(--secondary-color);
  text-align: left;
  font-weight: bold;
}

th:first-child {
  border-top-left-radius: 10px;
  border-left: none;
}

th:last-child {
  border-top-right-radius: 10px;
  border-right: none;
}

td {
  padding: 0.5rem;
  border: 1px solid var(--secondary-color);
  text-align: left;
}

/* There is no styling applied to tbody elements */
/* tbody {} */

/* There is no styling applied to tr elements */
/* tr {} */

/* Forms */
form {
  background-color: var(--secondary-background-color);
  padding: 2rem;
  border: 1px solid var(--secondary-color);
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

label {
  display: block;
  font-weight: bold;
  color: var(--text-color);
}

/* A label which sits to the left of the input */
label.left {
  margin-right: 0.5rem;
}

/* A label which sits to the right of the input */
label.right {
  margin-left: 0.5rem;
}

/* A label which is aligned to the bottom of the input */
label.ground {
  align-self: end;
}

/* If the label is for a toggle switch, center it vertically since toggles can be taller than normal checkboxes in some cases */
input[type="checkbox"].toggle + label {
  align-self: center;
}

input,
textarea,
select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--secondary-color);
  border-radius: 5px;
  width: 100%;
  box-sizing: border-box;
  font-size: 1rem;
  transition:
    border-color 0.3s,
    box-shadow 0.3s;
}

select {
  width: fit-content;
}

input[type="radio"] {
  width: auto;
  height: auto;
  margin-right: 0.5rem;
  padding: 0;
}

input[type="checkbox"] {
  width: auto;
  height: auto;
  margin-right: 0.5rem;
  padding: 0;
}

/* Toggle Switch */
input[type="checkbox"].toggle {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 3rem;
  height: 1.5rem;
  padding: 0;
  background-color: var(--secondary-color);
  border-radius: 1.5rem;
  position: relative;
  cursor: pointer;
  transition: background-color 0.3s;
  vertical-align: middle;
  margin-right: 0.5rem;
  border: 1px solid var(--secondary-color);
  flex-shrink: 0;
  box-sizing: border-box;
}

input[type="checkbox"].toggle::before {
  content: "";
  position: absolute;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  top: 50%;
  left: 0.125rem;
  transform: translateY(-50%);
  background-color: var(--secondary-background-color);
  transition: transform 0.3s;
}

input[type="checkbox"].toggle:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

input[type="checkbox"].toggle:checked::before {
  transform: translateY(-50%) translateX(1.5rem);
}

input[type="checkbox"].toggle:focus {
  box-shadow: 0 0 5px var(--primary-color);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  outline: none;
}

fieldset {
  border: 1px solid var(--secondary-color);
  padding: 1.5rem;
  border-radius: 5px;
}

legend {
  font-weight: bold;
  color: var(--text-color);
  padding: 0 0.5rem;
}

/* Media */
img {
  max-width: 100%;
  height: auto;
}

figure {
  margin: 0;
}

figcaption {
  font-style: italic;
  color: var(--text-color);
}

audio,
video {
  display: block;
  margin: 2rem 0;
  max-width: 100%;
}

/* Canvas */
canvas {
  display: block;
  margin: 2rem 0;
  border: 1px solid var(--secondary-color);
  max-width: 100%;
}

/* Section styles */
section {
  padding: 2rem;
  background-color: var(--secondary-background-color);
  border: 1px solid var(--secondary-color);
  border-radius: 5px;
}

section > h2:first-of-type {
  text-decoration: underline;
  margin-top: 0;
}

/* Header styles */
header {
  background-color: var(--secondary-color);
  color: var(--text-color);
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--primary-color);
  min-width: 20rem;
}

header .right {
  margin-left: auto;
}

@media (max-width: 40rem) {
  header .right {
    margin-top: 2rem;
    margin-left: 0;
  }
}

header h1 {
  margin-top: 0;
  font-size: 2rem;
}

header nav a {
  color: var(--text-color);
  text-decoration: none;
}

header a:visited {
  color: var(--text-color);
}

/* Navigation */
nav {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
}

@media (max-width: 40rem) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }
}

nav a.active {
  text-decoration: underline;
}

nav select {
  padding: 0.25rem 1rem;
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: var(--text-color);
  padding: 1rem 2rem;
  border-top: 1px solid var(--primary-color);
}

/* Details */
details {
  background-color: var(--secondary-background-color);
  border: 1px solid var(--secondary-color);
  border-radius: 5px;
  padding: 1rem;
  margin: 1rem 0;
}

details > summary {
  font-weight: bold;
  cursor: pointer;

  /* Summary text should not be accidentally highlighted when clicked */
  user-select: none;
}

/* Dialog (Modal) */
dialog {
  border: 1px solid var(--text-color);
  border-radius: 0.5rem;
  background-color: var(--background-color);
  color: var(--text-color);
}

dialog::backdrop {
  background-color: var(--backdrop-color);
  backdrop-filter: blur(2px);
}